Native American vs. Indian vs. American Indian vs. Amerindian

In our discussions about U. S. History, I may use reference groups of people in different ways as a means to contextualize a time period. For instance, Negro suffrage may be used in reference to the fourteenth amendment.

To address the concern about the use of "Indian": This term is both a historic reference and it be a politically correct term, though the proper term is "American Indian." I have tried to gather a little evidence. Here are a couple of links, albeit one is from wikipedia.

http://www.inthesetimes.com/article/3027/a_politically_correct_lexicon/

http://en.wikipedia.org/wiki/Native_American_name_controversy

http://www.sonofthesouth.net/american-indians/

http://www.americanindian.net/